Surgical mask



FIG. 1 is a front elevational view of a surgical mask showing our new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is an exploded bottom perspective view thereof;

FIG. 5 is bottom perspective view thereof; and,

FIG. 6 is front perspective view thereof, with the lower portion removed.

The broken lines in the Figures illustrate portions of the surgical mask that form no part of the claimed design. 

CLAIM The ornamental design for a surgical mask, as shown and described. 